title: Eight-year follow-up of school-based intervention on childhood overweight--the Kiel Obesity Prevention Study.
abstract: OBJECTIVE
  The aim of this study was to evaluate the 8-year outcome of school-based intervention on weight status, lifestyle and blood pressure (BP) as part of the Kiel Obesity Prevention Study (KOPS).
  
  
  METHODS
  Within a quasi-randomized controlled trial, 240 intervention (I) and 952 non-intervention (NI) students at age 6 and 14 years were assessed in schools. Six nutrition units followed by 20-min running games were performed within the first year at school. Primary outcome was the 8-year change in body mass index standard deviation score (BMI-SDS) according to German references. Effective intervention was tested using multilevel linear regression analysis.
  
  
  RESULTS
  Eight-year changes in BMISDS were +0.18 and +0.22 with increases in prevalence of overweight from 8.3 to 10.4% and 7.0 to 11.2% in I and NI students, respectively. Cumulative 8-year incidence of overweight was 5.9% and 7.1% in I and NI students, respectively. There was no overall effect of intervention, but a significant interaction was shown between the intervention and the socio-economic status (SES), which demonstrated that in high SES, the 8-year change in BMI-SDS was in favour of I (-0.17 in I and +0.17 in NI; p < 0.01). Intervention had no measurable effects on lifestyle and BP.
  
  
  CONCLUSIONS
  School-based health promotion has some favourable and sustained effects on 8-year changes in BMI-SDS, which are most pronounced in students of high SES families. The data argue in favour of further preventive measures.
authors.affiliation: Institute of Human Nutrition and Food Science, Christian-Albrechts University of Kiel, Kiel, Germany.
authors.forename: Sandra
authors.initials: S
authors.lastname: Plachta-Danielzik
authors.forename: Beate
authors.initials: B
authors.lastname: Landsberg
authors.forename: Dominique
authors.initials: D
authors.lastname: Lange
authors.forename: Jasmin
authors.initials: J
authors.lastname: Seiberl
authors.forename: Manfred J
authors.initials: MJ
authors.lastname: Müller
mesh_terms: D000293:Adolescent; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D002648:Child; D015444:Exercise / Q000502:physiology; D005260:Female; D005500:Follow-Up Studies; D005858:Germany / Q000453:epidemiology; D006801:Humans; D008019:Life Style; D008297:Male; D009765:Obesity / Q000453:epidemiology / Q000517:prevention & control; D050177:Overweight / Q000453:epidemiology* / Q000517:prevention & control*; D015995:Prevalence; D015397:Program Evaluation; D012574:Schools; D012923:Social Class; D016896:Treatment Outcome; D015431:Weight Loss